Please find the sum of difference of (-12) + (-38)

will give brainliest

How do i simply this expression (quadratic formula basis) on a ti-84 or normal calculator?

What is the slope of the line shown below?

Simplify (4x^2 - 8xy + 2y^2) - (9x^2 - 4xy - 7y^2) a. -5x^2 + 4xy + 9y^2 b. -5x^2 - 4xy + 9y^2 c. -5x^2 + 12xy + 4y^2 d. -5x^2 - 4xy - 5y^2